NGK R6254E-105 3949 Spark Plug

Ngk Racing Series Plugs Are Engineered To Withstand The Harshest Engine Conditions. Special Insulator Nose Configurations Improve Throttle Response. Corrugated Ribs Prevent Flashover. Pure Alumina Silicate Ceramic Insulator, Provides Superior Strength And Better Heat Transfer. Copper Core Aids In Heat Removal. Triple Seals Prevent Leakage. Specifications: - Shell - Thread Diameter: 14mm - Thread Pitch: 1.25mm - Seat Type: Gasket - Reach: 19mm (3/4´´) - Hex Size: 13/16´´ (21mm) - Terminal Type: Solid - Overall Height: Iso - Gap: 024´´ (0.6mm) - Center: Electrode - Material: Nickel - Type: Standard - Size: 2.5mm - Projection: Non-Projected - Ground: Electrode - Material: Nickel - Type: Slant - Quantity: 1 - Resistor Value: 1k Ohm - Heat Range: 10.5 - Torque Specscast Iron: 18-25.3 Lb. Ft. - Aluminum: 18-21.6 Lb. Ft.